AES Journal

Journal of the AES

2002 April - Volume 50 Number 4


Restoration and Enhancement of Solo Guitar Recordings Based on Sound Source Modeling (PDF-220K)  
Paulo A. A. Esquef, Vesa Välimäki, and Matti Karjalainen    227
By combining techniques for music synthesis and analysis, the authors demonstrated that the restoration of guitar recordings had been corrupted by added noise and limited spectral bandwidth. During the analysis phase the parameters of the synthesis model were extracted and then used to define the synthesis model, which is able to produce a simulation without noise or spectral limits. The initial corruption and the musical complexity limit the accuracy of the parameter extraction. The results of this work should be considered a pilot study.  

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On the Quality of Hearing One's Own Voice (PDF-164K)  
Ronald Appel and John G. Beerends    237
Evaluating the quality of sound reproduction in a telecommunications environment over long distances is unique and unrelated to the classical problem of reproduction quality. Specifically, the experiments attempt to calibrate the acceptable quality level for the listener's own voice through the side channel when it has been delayed and distorted. The proposed model represents degradation as a single number to predict the subjective experience of comfort while talking and listening to one's own voice.  

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Comparison of Different Impulse Response Measurement Techniques (PDF-264K)  
Guy-Bart Stan, Jean-Jacques Embrechts, and Dominique Archambeau    249
Although the impulse response of a linear, time-invariant system is mathematically defined, the choice of empirical methods strongly influences the results when applied to a real room with noise and other imperfections. The authors explored the relationship between the environment under test and four different approaches: maximum-length sequences, inverse repeated sequences, time-stretched pulses, and SineSweep. Recommended choices are suggested based on noise level, accuracy, and calibration effort.  

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Variability in the Headphone-to-Ear-Canal Transfer Function (PDF-48K)  
Ken I. McAnally and Russell L. Martin    263
The quality of virtual auditory space simulation using headphones is determined, in part, by the accuracy of the head-related transfer function that models the influence of the head and pinna as a function of sound location. A potential problem with the resulting filters is that the transfer function is influenced by the variability of listener headphone placement, which might change the localization accuracy. After careful study the authors concluded that the variability is not sufficient to significantly influence perception.  

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AES Standards Committee News (PDF-38K)    267
Call for comment communications; digital interfacing; preservation and restoration  
21st Conference Preview, St. Petersburg, Russia (PDF-476K)    274
    Calendar (PDF-440K)    276
    Program (PDF-72K)    278
    Registration Form (PDF-28K)    289
22nd Conference Preview, Espoo, Finland (PDF-372K)    290
    Calendar (PDF-432K)    292
    Program (PDF-52K)    293
    Registration Form (PDF-36K)    301
Updates and Corrections to the 2001/2002 International Sections Directory (PDF-36K)    302
Review of Acoustical Patents (PDF-212K)    271
News of the Sections (PDF-176K)    303
Sound Track (PDF-26K)    307
New Products and Developments (PDF-66K)    308
Upcoming Meetings (PDF-13K)    310
Available Literature (PDF-13K)    310
Membership Information (PDF-150K)    311
Advertiser Internet Directory (PDF-152K)    312
AES Special Publications (PDF-88K)    315
In Memoriam (PDF-96K)    320
Sections Contacts Directory (PDF-38K)    322
AES Conventions and Conferences (PDF-40K)    328
Cover (PDF-20K)    
VIP List & Editorial Staff (PDF-36K)    
Sustaining Members List (PDF-20K)    
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Download Entire Journal As One PDF (PDF-3.8MB)    
AES - Audio Engineering Society